Sahih al-Bukhari 1523
صحيح البخاري#1523SahihNarrated Ibn `Abbas:The people of Yemen used to come for Hajj and used not to bring enough provisions with them and used to say that they depend on Allah. On their arrival in Medina they used to beg the people, and so Allah revealed, "And take a provision (with you) for the journey, but the best provision is the fear of Allah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 25:11